62
- FORM NO. 56043115 - 34 RST
Wheel Drive System
Wheel Drive Troubleshooting guide
Problem
Possible Cause
No wheel drive in Forward or Reverse
•
Wheel drive motor circuit breaker
(F3)
tripped (reset 30A circuit breaker).
•
Control circuit breaker
(F2)
tripped (reset 5A circuit breaker).
•
Defective S6 & S7 palm drive switches and or circuit wiring (repair or
replace).
•
Defective A2 speed control, replace.
•
Defective M1 wheel drive motor (repair or replace).
No wheel drive in reverse only
•
Defective S5 reverse directional switch or circuit wiring (repair or replace).
•
Speed control can’t change electrical polarity to wheel motor. Replace the
A2 speed control.
No variable wheel drive speed (will run @ its slowest
speed only).
•
Defective R1 speed limit potentiometer, test for an open in both the pot
and circuit wiring (repair or replace).
Operator control panel displays error 03 fault code
•
Speed controller has sensed an operational error code fault. See Drive
Status LED fault codes (table 1) in the Electrical System section.
Additional wheel drive circuit information
Control circuit pin connection test specification data
Circuit Function Test
Correct Circuit Test Values
Test for forward throttle input:
•
W/key on check pin#13 to pin #4 with palm drive switches open.
•
W/key on check pin#13 to pin #4 with palm drive switches closed.
•
.578 DCV
•
4.12 DCV
Test for R1 speed limiting pot input:
•
W/key on check the R1 Min speed input voltage signal pin#13 to
pin#18. Note: Have the R1 pot knob turned fully CCW.
•
W/key on check the R1 Max speed input voltage signal pin#13 to
pin#18. Note: Have the R1 pot knob turned fully CW.
•
0 VDC
•
5 VDC
